Depreciation ? 320i vs 525d vs X5 3.0d

[BOR]

Does anyone have any knowledge of the percentage depreciation I could expect on list price-to-private-sale after 10-12mths ? Would be Tourings, with lightish/sensible spec.

Looking for least depreciating(in percent)BMW with 4+ seats, rather than best car, if that makes any sense.

Thangs,
BOR